Yūrei.

Yūrei (幽霊, ゆうれい) is the broad Japanese category of the restless dead, but the form most people recognize is largely an Edo visual creation. In paintings, prints, and theater the yūrei wears a white burial robe, lets its black hair hang loose, holds its hands limply before the body, and often lacks visible feet. Hitodama flames or a faint floating posture further separate it from the living.

Those details are culturally powerful because they condense funeral practice and ghost belief into one image. White belongs to death and ritual purity, loose hair marks the body after burial preparation, and the half-floating form shows a spirit no longer fully anchored to the physical world. The yūrei therefore looks less like a monster than like a human death left unresolved.

A yūrei remains because something has not been completed. Proper rites may be missing, a burial may have failed, a murderer may remain unpunished, or a final emotion may still bind the dead to the world. For that reason yūrei are often attached to one place, one family, or one repeating action. They are not merely wandering horrors. They are souls with a task, wound, or grief that still has weight.

The response is therefore relational rather than purely martial. A yūrei may be calmed by correct rites, by discovery of remains, by justice for the dead, or by release from the emotion that fixes it in place. More violent forms such as the onryō resist this process, but the broader yūrei class preserves the hope that haunting can end once the bond between living and dead is properly repaired.